275 lines
13 KiB
JSON
275 lines
13 KiB
JSON
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"cveId": "CVE-2021-47012",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-02-27T18:42:55.953Z",
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"datePublished": "2024-02-28T08:13:30.284Z",
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"dateUpdated": "2026-08-05T08:45:33.281Z"
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/siw: Fix a use after free in siw_alloc_mr\n\nOur code analyzer reported a UAF.\n\nIn siw_alloc_mr(), it calls siw_mr_add_mem(mr,..). In the implementation of\nsiw_mr_add_mem(), mem is assigned to mr->mem and then mem is freed via\nkfree(mem) if xa_alloc_cyclic() failed. Here, mr->mem still point to a\nfreed object. After, the execution continue up to the err_out branch of\nsiw_alloc_mr, and the freed mr->mem is used in siw_mr_drop_mem(mr).\n\nMy patch moves \"mr->mem = mem\" behind the if (xa_alloc_cyclic(..)<0) {}\nsection, to avoid the uaf."
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